Gas-stop seal



P. MUELLER GAS STOPv SEAL March 20,.'1928. y 1,662,863

Filed Oci- 28, 1925 Z5 ff Suez nuff Patented Mar. 2o, 192s.

UNITED STATES I 1,662,863 FICE.

PHILIP MUELLER, or DECATUR, ILLINOIS, vASSrGNoIr 'ro AnoL'PH -MUELL'En TRUSTEE, or nncA'rUn, ILLINOIS.

' GAS-STOP SEAL.

Application tiled October 28, `1925. Serial No. 65,376.

ingl key against rotative movement.

1 vA11-'essential feature* of theV invention consists in irremovably connecting the locking member to aT ira-ngible collar by means of a yieldaloleV split pin,` sothat it will be neces sary, when-the parts are in'flocking engageinent, to `breaker mutilate the rangible coli lar, in order to-'rotate the 'turning key.

Vtothe provision otfa fra-ngible locking and` sealing member which in addition 'tobeing inexpens'veto produce, is also effective inI operation, and which, whcn'set up, securely y-locks and seals the parts against rotative movement.

Referring to the drawings W trated a-preferred form 'of the invention:

Figure 1 isa top plan view'of a cock showfingthe locking device attached thereto.

Figure 2- is a sectional view taken Substan- L. 'tially along the line 2-2 of Figure 1.

:Figure 3 yisa' perspective view .of the Seve'ral parts `of theflock and'seal support.

Figure bis a lsectional view of a modified form of the invention.

fFigure 5 is-a sectional view of another.

*modified form of t-heinvention.

y Figure r6 is a'sectional view of a still fur- 'thermodiiication V Referring' vto the drawings, wherein like numerals .indicate likeparts Iin the several 'views,:10fden'otes a Igas cock body of well known type,which isprovided with a latertspondingly-lformedopening 13 in the arm 14' of the turning key 15, when the Valve is in the closed position.

The turning key 15 is connected to the cock 10 by means of av locking bolt or pin 16, extending through the openings 12 and 13, which register when the arms 11 and 14 are parallel with each other. The locking bolt 16 may be made of iron, steel, or some other Suitable metal, and is provided at one end with an enlarged head 17, while its opposite extremity is formed with a reduced stem 18 which receives the collar 19. The collar 19 is preferably composed of any easily frangible ymaterial such as lead or the like, and

has formed in one wall thereof, a radial opening 20 which will register with a'corre- Spondingly formed opening 21 -in thestem 18. of ythe locking holt when the parts are brought to lproper position.

A split pin y22 lying wholly withinthe openings 20 and 21, secures the lockingcollar' to the bolt, in the 4manner shown in Figure 2.

VIt willbe `seen-that when the pin22 is inserted-in position, it will be brought into vfrictional engagement with the wall of the fopenings 2O and 21, and its outerend will vlie y :within recess 2O in the collaryso las to pre- Aturther object ofthe invention relatesf In order to permit rotation of thel .turning key, relative to the cock body,it will beunecfessary to break or mutilate the frangible col-` lar 19. To facilitate the destroying of the v *collar its outer `periphery, is lpreferably erein is illus- Scored with a Series of grooves 23,y arranged :to receive any suitable tool for-breaking the ing 13 in the arm 14 is in alignment with the openingI 12 in the armV 11. The locking'member 16.isthen inserted through-these'open- 'ings inthemanner as shown inrFigure'2, and :the seal1ng'collar'19 isconnected to theibolt `loyfmea'ns of the split-pin 22. "It will be Seen s that in order to operate the key 15-to\open the cock 10, it'w-ill bene'cessaryT to `break the frangible collar 19, and remove vthe bolt 16 Vfromengagement with thearms 11l andf14.

Furthermore, should any unauthorized -per-v f sonattempt to open the cock for the-purpose ofsurreptitimisly' using'the. fluid vpassing a'lly.projecting arm vor-"wing l11 having an:v openingv12, adapted to register with. a 'corre-z;

therethrough, it would be'necessary to "break y the locking membeL-fwhich could-notbe VdoneA l:without :bei-ngI detected.

.the locking bolt by means of the split pin 32,

which extends through the opening 30, and a correspondingly aligned opening 34 formed in the stem 31. The inner end of the pin 32 is provided` with radially rojecting lugs 33 arranged to t into the en arged re` cess 35 formed at the inner end of the opening 34. When the pin 32 is inserted in the openings 30 and 34, the lugs 33 Will spring into engagement With the shoulder o the rel cess 35, so as to positively lock the collar to the pin.

Maniiestly in order to turn the key 25 relative to the cook 24, it will be first neces` sary to remove the locking bolt 28 from engagement with the arms 26 and 27, Which can only be effected by breaking the frangible collar 29.

In the niodilication shown in Figure 5, the

cock body 36 and the turning key 37 are :provided with` laterally extending Wings 38 and 39 respectively, each of said Wings having vertically aligned openings for the reception of the lock bolt 40. The lower end of the bolt 40 beneath the Wing 38-has a reduced portion 4l providedvvith a transverse opening 42. A frangible locking col- `lar` 43,vvhich its on the portion 41, is provided with a radial port 44 and a cut out `ing 42.

portion 45 adapted to align with the open- A substantially U-shaped spring member 46 is arranged to be inserted through the port 44 and engage the cut out portion 45 and the Walls or' the op'ening 42 to look the nut to the bolt. It will be noted that the radial port 44 is of smaller diameter y 58 which receive the projections 59-of4 a split` than the opening 42 and forms shoulders or abutments 47 for preventing removal of the spring member 46 when the same has been placed in position.

In the form of the invention illustrated in Figure "6, the turning key`48 has a lateral Wing 49 arranged to register with a complementaryiwing 50 on the cock bodyll. The

wing 50 ispreferably provided with a recess 52 inthe upper face thereof which receives the lovver-4 end of the bolt 53 Whenthe parts are moved' to locking position. Afrangible locking collar 54 is mounted onthe bolt 53 between the Wings 49 and 50, and has aradial opening 55 in one side thereof which registers with a similarly formed `opening 56 in the bolt 53. The `opening 56 prefer`- ably terminates at its-inner endin an enlarged recess 57 so as to form the shoulders pin 60 and thus positively preventing the removal ofi the nut from the `bolt unless the latter is destroyed or mutilated.

collar on said bolt having in one-side thereof an opening adapted to register With the opening in said bolt, and a yieldable locking member adapted `to be inserted through the opening in said collarand lie Wholly within said openings for non-rotatably` connecting the collar to the bolt.

`2. In combination, a locking bolt having `a radial opening therein provided-With an enlarged recess, a frangiblecollar on said bolt having an opening in one side' thereof adapted to register with theradial opening in said, bolt, a` yieldable locking member adapted to be inserted through the opening in saidcollar and lie wholly within. said openings, `said member provided on its inner end with projecting lugs arranged to engage the recess inthe boltopening `for non-rotatably connectingthecollar to the bolt.

3. `In combination, a locking bolt having a radial opening therethrough, Va frangible collar on said bolthaving in one side thereof `a `transverse1opening adapted to register with an opening in said bolt, and an expansible and contractable member adapted to be inserted through the opening in said collarV and `lie Wholly Within said openings, said member having means coacting with comple# mentary means formed inthe Wall ofthe transverse `opening in said collar. for `pre- `venting the removal ,of said member when once placed in its looked position. Y

In testimony whereof I have hereunto set myhand.` p r i A PHILIP 

